2024
The evolution of patch-clamp electrophysiology: robotic, multiplex, and dynamic
Ghovanloo M, Dib-Hajj S, Waxman S. The evolution of patch-clamp electrophysiology: robotic, multiplex, and dynamic. Molecular Pharmacology 2024, 100001. PMID: 39164111, DOI: 10.1124/molpharm.124.000954.Peer-Reviewed Original ResearchPatch-clamp techniquePatch-clamp electrophysiologyPatch clampVoltage- and current-clamp modesIon channelsContribution of ion channelsCurrent-clamp modePatch-clamp methodOhm's lawDynamic-clampGating mechanisms of ion channelsMuscle cellsCardiac excitabilityGold standardExcitable cellsReceptorsGate conductionElectrophysiologyNeuronsElectrogenesisSimultaneous recordingCellsHigh-throughput automated platformMechanisms of ion channelsGating mechanismFunctionally-selective inhibition of threshold sodium currents and excitability in dorsal root ganglion neurons by cannabinol
Ghovanloo M, Effraim P, Tyagi S, Zhao P, Dib-Hajj S, Waxman S. Functionally-selective inhibition of threshold sodium currents and excitability in dorsal root ganglion neurons by cannabinol. Communications Biology 2024, 7: 120. PMID: 38263462, PMCID: PMC10805714, DOI: 10.1038/s42003-024-05781-x.Peer-Reviewed Original ResearchConceptsDorsal root ganglionDorsal root ganglion neuronal excitabilityDorsal root ganglion neuronsNeuronal excitabilityCurrent-clamp analysisSteady-state inactivationVoltage-dependent sodiumSlow inactivated stateAutomated patch clamp platformMultielectrode array recordingsNav currentsNeuropathic painSodium currentRoot ganglionGanglion neuronsSlow inactivationInactivated stateCurrent inhibitorsIon channelsNeuronsInhibitory effectCannabinolArray recordingsEndocannabinoidCannabinoidCompartment-specific regulation of NaV1.7 in sensory neurons after acute exposure to TNF-α
Tyagi S, Higerd-Rusli G, Ghovanloo M, Dib-Hajj F, Zhao P, Liu S, Kim D, Shim J, Park K, Waxman S, Choi J, Dib-Hajj S. Compartment-specific regulation of NaV1.7 in sensory neurons after acute exposure to TNF-α. Cell Reports 2024, 43: 113685. PMID: 38261513, PMCID: PMC10947185, DOI: 10.1016/j.celrep.2024.113685.Peer-Reviewed Original ResearchTNF-aSensory neuronsEffect of TNF-aSensory neuron excitabilityTumor necrosis factor-aRegulation of NaV1.7Voltage-gated sodiumPro-inflammatory cytokinesCompartment-specific effectsNeuronal plasma membraneSensitize nociceptorsNeuronal excitabilitySomatic membraneChannel N terminusElectrophysiological recordingsP38 MAPKIon channelsFactor AAcute exposureMolecular determinantsNeuronsAxonal endingsPhospho-acceptor sitesPlasma membraneCompartment-specific regulation
2022
Non-psychotropic phytocannabinoid interactions with voltage-gated sodium channels: An update on cannabidiol and cannabigerol
Ghovanloo M, Dib-Hajj S, Goodchild S, Ruben P, Waxman S. Non-psychotropic phytocannabinoid interactions with voltage-gated sodium channels: An update on cannabidiol and cannabigerol. Frontiers In Physiology 2022, 13: 1066455. PMID: 36439273, PMCID: PMC9691960, DOI: 10.3389/fphys.2022.1066455.Peer-Reviewed Original ResearchCannabidiol increases gramicidin current in human embryonic kidney cells: An observational study
Ghovanloo MR, Goodchild SJ, Ruben PC. Cannabidiol increases gramicidin current in human embryonic kidney cells: An observational study. PLOS ONE 2022, 17: e0271801. PMID: 35913948, PMCID: PMC9342711, DOI: 10.1371/journal.pone.0271801.Peer-Reviewed Original ResearchConceptsHuman embryonic kidney cellsEmbryonic kidney cellsHEK cell membranesMembrane biophysical propertiesKidney cellsMonomeric proteinCompound-protein interactionsBacterial cellsIon channelsCell membraneBiophysical propertiesLipid membranesFormation of poresCellsLinear gramicidinCannabis plantCBD activityMembraneGramicidinPlantsProteinPotential therapeutic properties